I just got my stealthsim and it works great, I just have one problem. I tried the search but could not find an answer, so maybe you guys could help.

I am using a t-mo sim and i have the APN setting as wap.voicestream.com and followed the instructions on here for resolving the error 502. The edge worked for about 5 minutes. Now when i try to connect to safari, stock google maps all it does is take me back to the springboard. Any ideas?